wittemann



(No Model.) SSheets-Sheet 1. J. F. WITTEMANN. Q

OARBONIO ACID GAS GENERATOR. No. 465,796. Patented Dec. 22, 1891.

v BY

ATTORNEYS.

(No Model.) v 3 Sheets-Sheet 2.

' J. F. WITTEMANN.

UARBONIG ACID GAS GENERATOR.

No. 465,796. 1 Patented Dec. 22, 1891. e cL.

WIT/v58 8: I INVE/VTOI? buzz f? I A TTOR/VEYJ'.

(No Model.) 3 SheetsSheet 3.

J. P. WITTEMANN.

GARBONIG ACID GAS GENERATOR.

No. 465,796. Patented Dec. 22, 1-891.

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WITNESSES: lA/l/E/VTOI? A TTOR/VEYS UNITED STATES PATENT OFFICE.

JACOB F. XVITTEMANN, OF NElV YORK, N. Y.

CARBONlC-AClD-GAS GENERATOR.

SPECIFICATION forming part of Letters Patent No. 465,796, dated December 22, 1891.

Application filed April 16 1890- Serial No. 348,146. (No model.)

To caZZ whom it may concern:

Be it known that I, JACOB F. WITTEMANN, a citizen of the United States, residing in the city, county, and State of NewYork, have in vented certain new and useful Improvements in Oarbonic-Acid Generators, of which-the following is a specification. g

This invention relates to an improved apparatus for generating and purifying carbonic acid to be used for carbonated beverages and other purposes, said apparatus being arranged to generate larger or smaller quantities of gas by automatically regulating the supply of acid and the generation of gas as required for carbonating purposes.

The object of the invention is to provide a simple and effective apparatus of this charactor from which the condition and working may be readily seen.

In the accompanying drawings, Figure 1 represents a side elevation of my improved carbonic-acid generator, partly in section the interior parts of the same.

through the generating-cylinder, so as to show Fig. 2 is an end elevation ofthe generator. Fig. 3 is a vertical central section of one of the purifiers drawn on a larger scale. Fig. 4c is a vertical central section of the acid-vessel, showing the pressure-regulating valve and the connection of the same with the acid-supply valve; and Fig. 5 isa side elevation, partly in section, of the acid-vessel, showing a modified form of pressure-regulating valve.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the gas-generatin g cylinder, which is supportedby upright standards A, having ring-shaped upper parts A to which the ends and the heads A of the generating-cylinder A are applied. B is an acid-vessel, and O G are purifiers, which are supported on suitable brackets on thegenerating-cylinder. In the cylinder A is arranged a rotary shaft D, which is supported in bearings d d of curved bracketarms d, attached to the main standards A, the cylinder-heads being provided with central stuifing-boxes at the points where the l shaft D passes through the same, so asto prevent any escape of gas from the cylinder. To the shaft D are applied at the interior of the generating-cylinder A a number of perforated stirrer arms or Wings D, by which the charge in the cylinder is agitated and thoroughly mixed with the acid supplied from the acid-vessel B. The shaft D is preferably made of square, hexagonal, or other cross-sections, and the blades D. provided with hubs having openings of corresponding shape and size, so as to avoid the necessity of fastening the stirrer-arms to the shaft. is charged in the usual manner with water and marble -dust or other substance from which the gas is generated by the action of the acid. At the bottom of the cylinder A is arranged an outlet-opening a, which is closed by a hinged cover a, that is retained in the well-known manner by a pivoted yoke and a fastening-screw passing through an eye of the yoke. The exhaust-charge is drawn off through the bottom opening a preparatory to supplying the cylinder with a new charge.

The sulphuric or other acid used for generating the carbonic-acid gas is charged into the acid-vessel B through an opening I) at its upper part, which is tightly closed by a suitable screw-cap b. The outlet-opening at the bottom of the acid-vessel B is connected with the upper part of the generating-cylinder A by a connecting-pipe 11 which is in part made of glass and inclosed by a metal covering b having openings, through which the feed of the acid may be readily observed. In the glass pipe 19 is arranged a valve-seat 11 which is tightly coupled to the pipe 6 as shown in Fig. 4., said valve-seat serving as a support for the acid-supply valve B. The glass pipe extends above and below the valve-seat, and

The cylinder G it can be readily seenwhether the valve is open or closed and in proper working condition.

The connecting-pipe Z2 communicates with a downwardly-curved and perforated pipe I), by which the acid is distributed in a spray, and thus the generation of gas in the cylinder Acarried on in a uniform and effective manner. The acid-supply valve B is guided in the upper part of the connecting-pipe b and provided with a spindle B that passes centrally through the acid-vessel B to the upper part of the same, said spindle being connected either directly to a pressure regulating valve E at the top part of the acid-vessel, as shown in Fig. 5, or connected thereto by in- 7 of the spring on the diaphragm lowers the,

termediate levers and connecting-links 6, c c and c with the diaphragm c of the valve E, as shown in Fig. 4.

The pressure at which the apparatus is to be worked is regulated by a spring a that is supplied to the upper part of the diaphragm of the pressure-regulating valve B, the spring being regulated by means of a screw-spindle e and an eXterior'screw-nut c that is applied to the outer end of the screw-spindle e, as shown in Fig. 4. When the pressure in the generating-cylinder A and acid-vessel B increases, so that it overcomes the pressure of the spring 8 on the diaphragm e, the latter is raised,and thereby the supply-valve B lowered by the lever connection of the diaphragm c with the valve-spindle 13*, so that the acidsupply valve is partly or entirely closed, and thereby the supply of acid to the generatingcylinder A and the generation of carbonic acid in the cylinder diminished or entirely interrupted. \Vhen the pressure in the upper part of the acid-vessel decreases, the pressure latter, so that the acid-supply valve is raised and by the increased supply of acid the generation of the acid in the cylinder A accelerated and increased.

In place of the pressure-regulating valve and its connection with the spindle of the acid-supply valve shown in Fig. 4 the con-- struction shown in Fig. 5 may be used, in

which the diaphragm is connected directly to the spindle of the acid-supply valve, and the opening and closing of the same produced by the di'iference in the pressure between the interior of the acid-vessel'and that of the generator and its outlet-pipe, which passes through the regulating-valve E above the diaphragm. In this case the regulating-spring is interposed between a projection or bridge in the casing of the pressure-regulating valve E and spindle B of the acid-supply valve, the spring producing the raising of the valve in proportion as a larger or smaller supply of acid is required. The tension of the spring Z is regulated by an interior screw-cap c and leakage of gas at this point prevented by an exterior screw-cap e", which is screwed tightly to the upper part of the valve-casing.

To prevent the formation of a vacuum in the acid-chamber the discharged acid is replaced by gas under any desired working pressure by means of a pressure-reducing valve f ,which is interposed in a pipe f, that connects the gas-discharge pipe of the generating-cylinder with the top part of one of the purifiers O, as shown in Fig 5. In place of the reducing-valve f of any approved c011- struction, a stop-cock or valve f may be inserted, as shown in' Figs. 1 and 4. The gassupply pipe f is extended downward through the purifier C to the bottom of the same, so as to discharge the gas at the lower part of the same and compel it to percolate through the column of water in the purifier, so as to be thoroughly washed by the same from adhering traces of acid. From the upper part of the purifier C the gas is conducted by a connecting-pipe C' to a second purifier C, in which it is conducted through a downwardly-extending pipe to the bottom of the same, so as to pass again through the column of water in the same to the upper part of the purifier and from the same in a thoroughly-washed con- I dition to the discharge-pipe O for use.

The construction of the purifier C is shown in detail in Fig. 3. It consists of a lower metallic. portion and an upper glass portion, in

which latter the height of the water column I and the upward bubbling of the gas through the samecan be observed. The two portions of the shell of the purifier are securely held together by the top and bottom 0 which are connected by means of a central rod 0, which passes through a central boss of the top 0 to which it is attached by a screw-nut, and a suitable packing-ring applied to the upper end of the rod 0 as shown in Fig. 3. Thelower end of the connecting-rod C is made of conical shape and attached in an y suitable, manner to the bottom 0 ofthe purifier O, the conical end being provided with a number of openings at the lower part for collecting the sediments contained in the water and gas atthe bottom of the purifier, which sediments are drawn off from time to time through a bottom dischargeopening closed by a screw-cap or valve. The

water required for the purifier is drawn off from time to time through a bottom pipe provided with a stop-cock, through which pipe the new supply of water is forced up-by a pump, or the purifier may be refilled by a pipe arranged in the top of the purifier.

For the purpose of producing the properdistribution of the carbonic-acid gas through the water column in the purifier the latter is provided, preferably, at the lower and upper ends of the metallic portion of the shell with a perforated conical diaphragm C the lower one of which is attached to the connecting-rod 0* above the conically-fiaring end of the same, while the upper diaphragm is also attached to the rod 0 so as to produce the distribution of the gas through the column of water and the thorough Washing of the same on its passage through the water. The gradually-diminishing space formed between the coni-g cally-flaring lower end of the connecting-rod O and the lower perforated diaphram C serves for distributing the gas at the same pressure throughout the column of water in the purifier and produces the reliable and effective act-ion of the same.

Having thus described my invention, I claim as new, and desire" to secure by Letters Patent 7' 1. In an apparatus for generating carbonicaoid gas, the combination of a generating-cylinder, a vessel for containing acid, mounted on said cylinder-,8. pip-e connecting said vessel with said cylinder and provided with a transparent window, a valve-seat disposedin said pipe opposite said window, an acid-supply valve disposed within said tube opposite said window and adapted to engage said seat, and a pressure-regulating valve connecting the spindle of the said supply-valve.

2. A purifier for a carbonic-acid-gas apparatus, consisting of a vertical chamber, a rod connecting the top and bottom of said chamber, the bottom of said rod being provided with a flaring perforated partition, a conical diaphragm disposed in said chamber near its lower end above said partition, and a gas-inlet pipe extending downward and opening into said chamber between said partition and diaphragm.

3. A gas-purifier composed of a main part or shell, top and bottom parts, a connecting-rod having a conically flaring and perforated lower end, a gas-inlet pipe terminating near the bottom,and conically-flaring diaphragms in the shell for producing the uniform distribution of gas through the water column, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in pres ence of two subscribing witnesses JACOB F. XVITTEMANN.

Witnesses:

PAUL GoEPEL, W. REIMHERR. 

